Method of making coiled metal box-straps



(No Model.)

S. G. CARY. METHOD OF MAKING GOILED MET-AL BOX STRAPS.

Patented Nov. 25, 1890.

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SPENCER C. CARY, OF BALDIVIN, QUEENS COUNTY, ASSIGNOR TO \VILLIAM H.VANDERBILT, OF BROOKLYN, NEIV YORK.

METHOD OF MAKING COILED METAL BOX-STRAPS.

SPECIFICATION forming part of Letters Patent No. 441,355, dated November25, 1890.

Application filed June 11,1890 Serial No. 355,028. (No model.)

To all whom it may concern.-

.Be it known that I, SPENCER O. CARY, of Baldwin, county of Queens,State of New York, a citizen of the United States, have invented certainnew and useful Improvements in the Method of Making Coiled MetalBox-Straps, of which the following is a full, clear, and exactdescription, reference being had to the accompanying drawings, formingpart of this specification.

My invention consists in the method of making coiled metal box-straps,which comprises, first, uniting endwise at their corresponding edges anindefinite number of metal sheets of equal width by similar series ofindividual and preferably equidistantly located fasteners or joints,with the corresponding individual fasteners in each said series at theseveral unions of the sheets in line with each other, respectively,throughout the extent of the united sheets, then slitting or cutting thethus-united metal sheets into strips or bands equal in number to thenumber of fasteners in each series thereof, and each thusconstitutedstrip or band including and having the respective correspondingfasteners of each said series thereof, and, finally, coiling thethus-constituted metal strips or bands of indefinite length separatelyupon themselves, respectively, into individual helices, as and for thepurpose hereinafter set forth.

Figure 1 illustrates the first step in my im proved method, showing inperspective plan several metal sheets united endwise at theircorresponding similar edges in succession by similar series ofindividual and equidistantlyarranged fasteners; and Fig. 2 illustratesthe second and final steps in my method, showing the united metal sheetspartially slitted into strips or hands corresponding in number to thenumber of individual fasteners in the re spective series thereof and thethus-consti tuted metal strips or hands coiled separately uponthemselves into individual helices.

In carrying out my invention I take metal sheets which are of adesirable gage or thickness, and which are of uniform width and of awidth adapting them to constitute strips or bands suitable forbox-straps when slitted or cut by parallel kerfs, and'I unite thesemetal sheets endwise successively at their corresponding edges by meansof individual eyelets, rivets, or equivalent fasteners, which arearranged or located in series at the several successive joints or unionsof the sheets,and with the fasteners of each series preferablyequidistant from each other, and so that the corresponding individualfasteners in each said series are in line with each-other, respectively,throughout the several'unions of the 6c sheets.

In Fig. 1, A A A are the metal sheets of uniform Width, and a aretheindividual fasteners, which are arranged as hereinbefore set forthand unite the metal sheets-endwise, the edges of the sheets beingoverlapped successively, as shown. When the metal sheets are thus unitedsuccessively to constitute a continuous sheet of indefinite length, Islit the said continuous sheet into strips or hands of uniform width andof such width as adapts them for use as box-straps. In slitting the saidunited sheets, as described, I make the cuts parallel to each other andpreferably equidistant from each other, and I thus divide 7 5 the sheetsinto continuous bands or strips, which are equal in number to the numberof individual fasteners a in each series thereof at the successivejoints of the sheets, and which bands or strips each include and havethe respective corresponding fasteners of each series thereof, by makingthe cuts in the sheets in lines midway between the adjacent fasteners inthe series thereof at each union of the sheets.

In Fig. 2 the lines of the slits or cuts in the sheets are shown at a,and the thus-consti- 'tuted several metal bands or strips are shown at BB B &c.

In completing my invention I coil the con- 0 tinuous bands or strips B BB &c.,separately upon themselves into individual helices C, asillustrated in Fig. 2. The metal sheets may be united successivelyendwise at their lapped edges by perforating the said lapped 5 edgeswith a series of coincident holes in a suitable punching-machinehaving agang of punching-dies, and then by means of a gang of eyeleting-dies orrivet-fasteners fixing eyelets or rivets in the said holes. The unitedroe sheets maybe slit, as described, byamachine provided with a gang ofcutters or knives,

and the separate bands or strips thereby constituted may pass in saidmachine directly to spools fixed on a revoluble mandrel and be thereoncoiled into individual helices.

By means of my improved method I am enabled to economically and rapidlyfabricate box-straps of great length from metal sheets of comparativelyshort lengths and to coil these long straps into individual helices onsuitable spools or reels, in which condition they are adapted to behandled, transported, and sold as an article of manufacture andmerchandise, and are in convenient form for use.

I am aware that metal box-straps have been heretofore made by cuttingstrips or bands successively from the edge of a metal sheet, and thenjointing these bands or strips together endwise successively to form acontinuous strap of indefinite length, and I make no claim herein tosuch mode of making metal box-straps. Such said mode of makingbox-straps is a slow, tedious, and expensive operation, and the objectof my present invention is'to overcome the objections incident to suchold method.

I am also aware that metal box-straps of i11- definite length have beenheretofore coiled into helices, and therefore I make no claim herein,broadly, thereto.

I am furthermore aware that continuous and homogeneous sheets ofmaterialsuoh as paper-have beenheretofore slitted into bands or ribbonsand these bands or ribbons coiled into separate helices, and I make noclaim herein,broadly, to thus slitting a sheet of material and coilingthe resultant individual strips, inasmuch as the same does notconstitute my invention, which consists in taking metal sheets ofuniform width and uniting them endwise at their corresponding edgessuccessively by similar series of individual and preferablyequidistantly-located fasteners, with the corresponding individualfasteners in each said series at the several unions of the sheets inline with each other, respectively, throughout the extent of the unitedsheets, then slitting the thus-united metal sheets into bands or stripsequal in number to the number of the fasteners in each series- That Iclaim as my invention, and desire to secure by Letters Patent, is-

The method of making coiled metal boxstraps, which consists in firstuniting endwise at their correspondingedges anindefinite number of metalsheets of uniform Width by similar series of individual fasteners withthe corresponding individual fasteners in each said series at theseveral unions of the sheets in line with each other, respectively,throughout the extent of the united sheets, then slitting thethus-united metal sheets into bands or strips equal in number to thenumber of fasteners in each series thereof, and with'eachthus-constituted band or strip including and having the respectivecorresponding fasteners of each said series thereof, and, finally,coiling the thus-constituted metal bands or strips separately uponthemselves, respectively, intoindividual helices, substantially as andfor the purpose set forth.

SPENCER O. CARY.

Witnesses:

ARDEN S. FITCH, A. T. FALEs.

